；A方形钢管的边长mm；S方形钢管的公称壁厚mm
以钢管R15S时，钢的密度为785g／cm3的计算公式。表641冷拔无缝矩形钢管的尺寸规格
基本尺寸截面面积FABmm08lO5l085l12O86l08611514708l1510O8O30302830343O4710299O363O501O3470238O223O269O370O2350285O394O2730015700160O0182O021500233O026800324O0545O2510197001390283022200099O2430235O1910185O0082O0088O203O160O0074S／cm2／kg／m理论质量GJx
惯性矩Jycm4O0239O0270O0388O0449O0438005090065400767O0973O0724O08520109O0934Wx
截面系数wycm30029700329O0354O0395O0462O052400535O0608O0715O066500765O0927O1090047800547O，0646O074800730O0849O0935O110O139O104O12201560133
fl152081156152
O4230591073lO299O363O501O611O347
O33204640574O235O285O394O48002730332O4640574O32303950559O7000310O379O53506680323O395O55907000373O4580653O825O3230395
O064000818009250017100195O0230O0240003620042lO052500579O0941O1120147O17000532O0624O0796O0897O068000802O1037O119O149O178O239O283O044500520
O111O144O16700784O0922O118013301110132O173O20001480177O2360279O162O1940258O30401740208O27803290222O266O3600432O197O236
O128O164O185O0571O0651O0768O0799O09050105O131O14501570186O244028401180139O177O1990136O161020702370213O255O3410404O111O130
O158O206O2380105O123O1570177O139O165O2160250O186O222O29503490180O215O28703370194O23l0309O366O246O296O400O480O1970236
O8O4238l15059l2O73116081121520819152O211810152O8l141520820810503083l105104110711089l04750583O68108510411O503O711O89lO395O483O4110503
f152081101520811215225O8l91522522O8l1415225O81241215225O825lO115
0711O891O44305430771097104750583O831105124O459O563O801101111905390663O951121144O539O663095112l144O523O643O921
O5590700O34804260606O763O373O4580653O8250976O361O442O629O794O936O4230520O746O951113O423O520O747O951113O4110505O723
O0654O0728O0748O0884O115O132O114O13601800211023l0064000753O0967O110O117O177O2120286O34l0381O134O160O213O252O277009180109O142
0315O3730227O2720367O438O25603080418O5030565O27lO3250440O5270589O361O4350598O727O828040304870669O815O9280399O4820660
O164O1820150O1770229O263Or